Gas/Oil Premix Thread
05-18-2011, 08:53 PM
#3105
Cool I got the Volvoline 2 cycle TCW3 oil. The 2-cycle oil were sitting in a small corner, and there were really only like 4 choices. Oh well but I found it. I hope my 8 will like it at the next fuel up. 
The recently replaced engine only has 5k miles on it, so I'm gonna premix from now on.
The recently replaced engine only has 5k miles on it, so I'm gonna premix from now on.
05-20-2011, 01:18 AM
#3109
05-20-2011, 02:19 AM
#3110
My first premix was with Valvoline, don't be surprised if the fumes out of your exhaust start to smell rotten, which is a symptom to a failing catalytic converter, it's just how it burns. I finished the Valvoline bottle then switched to Pennzoil and no rotten smell since.
05-20-2011, 05:32 AM
#3111
My first premix was with Valvoline, don't be surprised if the fumes out of your exhaust start to smell rotten, which is a symptom to a failing catalytic converter, it's just how it burns. I finished the Valvoline bottle then switched to Pennzoil and no rotten smell since.
This 2 stroke oil does look pretty intense...it's all dark and smells ugly. I also found out that it eats the paint on the bottle.
05-25-2011, 08:26 PM
#3113
Nature vs. Nurture
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From Racing Beat:
While undertaking development work on the RX-8 Renesis engine for SCCA T2/T3 use, we decided to introduce extra oil into the fuel to monitor the effect. To our surprise, this additional oil increased power! Further dyno testing found that by adding 10 oz. of Royal Purple 2-Stroke Oil to 6 gallons of fuel, we gained an average of 1.7 HP from 2000-9000 RPM, along with an increase in peak power of 4 HP. We validated this increase by changing back to a "non-oiled" fuel - and the power returned to the previous level. Later, we tried the same test with another brand of synthetic oil with nearly the same results.
For racing applications, the addition of a high quality synthetic oil increases power and most certainly decreases wear. The only negatives are the cost of the oil and an increase in the tendency to foul the spark plugs. (Note: We have not performed these tests on non-RX-8 engines yet, these results are unknown.)
While undertaking development work on the RX-8 Renesis engine for SCCA T2/T3 use, we decided to introduce extra oil into the fuel to monitor the effect. To our surprise, this additional oil increased power! Further dyno testing found that by adding 10 oz. of Royal Purple 2-Stroke Oil to 6 gallons of fuel, we gained an average of 1.7 HP from 2000-9000 RPM, along with an increase in peak power of 4 HP. We validated this increase by changing back to a "non-oiled" fuel - and the power returned to the previous level. Later, we tried the same test with another brand of synthetic oil with nearly the same results.
For racing applications, the addition of a high quality synthetic oil increases power and most certainly decreases wear. The only negatives are the cost of the oil and an increase in the tendency to foul the spark plugs. (Note: We have not performed these tests on non-RX-8 engines yet, these results are unknown.)
05-25-2011, 10:08 PM
#3114
Super Moderator
/\
Not surprised at all, I have been saying this for years that a Pre-Mix (good quality) will not only help to protect Apex, Side Seal and all surface wear but will also improve compressions and therefore add or at least maintain HP...and improve fuel economy.
I use Amsoil Saber Pro, yes it is expensive but IMO one of the better 2 stroke oils.
I am even using it in the gas on my brand new 2011 MX-5 SE PRHT at 2 mils per 1 Litre of gas.
Half the rate of my RX-8.
Obviously Racing Beats ratio is way more than needed for everyday use and at that level WILL foul Spark Plugs..
ALL GOOD...
Not surprised at all, I have been saying this for years that a Pre-Mix (good quality) will not only help to protect Apex, Side Seal and all surface wear but will also improve compressions and therefore add or at least maintain HP...and improve fuel economy.
I use Amsoil Saber Pro, yes it is expensive but IMO one of the better 2 stroke oils.
I am even using it in the gas on my brand new 2011 MX-5 SE PRHT at 2 mils per 1 Litre of gas.
Half the rate of my RX-8.
Obviously Racing Beats ratio is way more than needed for everyday use and at that level WILL foul Spark Plugs..
ALL GOOD...
05-25-2011, 10:13 PM
#3115
/\
Not surprised at all, I have been saying this for years that a Pre-Mix (good quality) will not only help to protect Apex, Side Seal and all surface wear but will also improve compressions and therefore add or at least maintain HP...and improve fuel economy.
I use Amsoil Saber Pro, yes it is expensive but IMO one of the better 2 stroke oils.
I am even using it in the gas on my brand new 2011 MX-5 SE PRHT at 2 mils per 1 Litre of gas.
Half the rate of my RX-8.
Obviously Racing Beats ratio is way more than needed for everyday use and at that level WILL foul Spark Plugs..
ALL GOOD...
Not surprised at all, I have been saying this for years that a Pre-Mix (good quality) will not only help to protect Apex, Side Seal and all surface wear but will also improve compressions and therefore add or at least maintain HP...and improve fuel economy.
I use Amsoil Saber Pro, yes it is expensive but IMO one of the better 2 stroke oils.
I am even using it in the gas on my brand new 2011 MX-5 SE PRHT at 2 mils per 1 Litre of gas.
Half the rate of my RX-8.
Obviously Racing Beats ratio is way more than needed for everyday use and at that level WILL foul Spark Plugs..
ALL GOOD...
+1...
I use Idemitsu, its one of the more expensive oils but its worth the added safety/protection.
As far as spark plugs being fouled just get some carb cleaner and a brush, clean those puppies off. Just be easy with them...
05-26-2011, 08:37 PM
#3116
Ok, I finally got my case of Idemitsu premix, a couple 8oz small bottles and an empty tank. I got to the gas pump, emptied 1 8oz bottle and filled up with 93.
Upon starting the car, I'm greeted with a CEL which was triggered by the following code:
I've searched this thread for that fault code and came up with nothing.
This is on an 04' w/ 40k miles. Any ideas? Do I really need a secondary O2 sensor already?
Upon starting the car, I'm greeted with a CEL which was triggered by the following code:
Code:
Fault log report generated by Torque for Android ================================================= Vehicle VIN: Not present Vehicle Manufacturer: Unknown Vehicle Calibration ID: Not present Current Fault Log ------------------ P0037: HO2S Heater Control Circuit Low (Bank 1 Sensor 2) Pending Fault Log ------------------ P0037: HO2S Heater Control Circuit Low (Bank 1 Sensor 2) Historic Fault Log ------------------ ECU reports no historic faults End of report.
I've searched this thread for that fault code and came up with nothing.
This is on an 04' w/ 40k miles. Any ideas? Do I really need a secondary O2 sensor already?
05-27-2011, 07:03 AM
#3119
Ok, I finally got my case of Idemitsu premix, a couple 8oz small bottles and an empty tank. I got to the gas pump, emptied 1 8oz bottle and filled up with 93.
Upon starting the car, I'm greeted with a CEL which was triggered by the following code:
I've searched this thread for that fault code and came up with nothing.
This is on an 04' w/ 40k miles. Any ideas? Do I really need a secondary O2 sensor already?
Upon starting the car, I'm greeted with a CEL which was triggered by the following code:
Code:
Fault log report generated by Torque for Android ================================================= Vehicle VIN: Not present Vehicle Manufacturer: Unknown Vehicle Calibration ID: Not present Current Fault Log ------------------ P0037: HO2S Heater Control Circuit Low (Bank 1 Sensor 2) Pending Fault Log ------------------ P0037: HO2S Heater Control Circuit Low (Bank 1 Sensor 2) Historic Fault Log ------------------ ECU reports no historic faults End of report.
This is on an 04' w/ 40k miles. Any ideas? Do I really need a secondary O2 sensor already?
I've had to change mine, and there are plenty of threads out there by others who have had to do the same.
You can look up your cel codes here
https://www.rx8club.com/series-i-tech-garage-22/rx-8-technical-info-cel-codes-pcm-pin-list-collision-guide-26291/
Good news is the Rear O2 sensor does nothing other than monitor catalytic efficiency.
Bad news is you need a new sensor ... might as well check the cat while you are at it...
And .... other than the fact that this happened at the same time you added premix .... which I believe only to be coincidence ... you should end the thread jack and take this issue to the trouble shooting section for further discussion.
Cheers
05-27-2011, 09:38 AM
#3121
Finally found a store down here that is selling Lucas semi synthetic in a quart size!
This is my favorite store bought premix, I personally think it smells the best and doesn't smoke. Since I am essentially catless smell and smoke matter a great deal to me.
This is my favorite store bought premix, I personally think it smells the best and doesn't smoke. Since I am essentially catless smell and smoke matter a great deal to me.
05-29-2011, 09:16 PM
#3122
Registered
Today I started premixing, and I swear even the first 10-15 mins after filling up I noticed a difference in smoothness of the engine. I have been driving this car nearly every day for the past year so I really don't think its me imagining things, I know how the car felt before. Its not a massive difference, but you can definitely tell.
I'm just so surprised it could make such a difference, wish I would have started doing this the day I bought the car.
I'm just so surprised it could make such a difference, wish I would have started doing this the day I bought the car.
05-29-2011, 11:23 PM
#3123
Super Moderator
Today I started premixing, and I swear even the first 10-15 mins after filling up I noticed a difference in smoothness of the engine. I have been driving this car nearly every day for the past year so I really don't think its me imagining things, I know how the car felt before. Its not a massive difference, but you can definitely tell.
I'm just so surprised it could make such a difference, wish I would have started doing this the day I bought the car.
I'm just so surprised it could make such a difference, wish I would have started doing this the day I bought the car.
Yes, it certainly does make a difference and no you are not imagining things..
05-30-2011, 02:03 AM
#3124
Registered
It just kinda blows my mind that such a small thing can make a difference. When I left the gas station after premixing I started to notice and really couldn't believe it would make such a difference. I just need to get some idemitsu premix and then I will feel better, using pennzoil marine synthetic right now.
Its kind of like the throttlebody mod where you remove the tubes that flow coolant through it, that made a big difference for me on really hot days even though you would not think it had much of an effect.
Its kind of like the throttlebody mod where you remove the tubes that flow coolant through it, that made a big difference for me on really hot days even though you would not think it had much of an effect.